Ask questions and find answers on ST25 NFC/RFID tags and readers, including connectivity implementations and antenna design.
Hello, I am working on implementing the CR95HF RFID reader into a project, and I'm having some trouble with the external crystal starting; I'm wondering if anyone has had a similar issue. On my design I have the CR95HF connected to an NRF52840 MCU ...
Hi, Every time I try to connect the eval kit to the GUI I get this error:This board doesn't reply properly to connect !Can anyone tell me how to solve this problem. I have made sure that the correct COM Port and baud rate is selected. Also, the powe...
Hi everyone!I am currently testing the reading of a tag with an ST25TV02K chip using two different readers. Both readers are based on the same NFC chip and use the same antenna coil, but they differ in the matching network between the NFC chip and th...
Hello, I am using STEVAL 25R200 board to read/write NFC tags. Currently, I am using NFC V type tag which is getting detedted by the EVAL GUI software as well as by the code I implemented using RFAL layer functions through Cube IDE. My tag UID as seen...
I am facing difficulties configuring the GPO interrupt on the ST25DV04KC to trigger exclusively when an NDEF message is written to the tag via the RF interface. The NDEF formatting is working correctly, and I am able to read and write data without is...
Hello, I am using STEVAL25R200 evaluation board and integrating read/write application using the ndef_read/write examples provided in the documentation embedded library. In my main function, I am Initializing the NFC using rfalNfcInitialize(), rfalNf...
Hello,I’m working with an ST NFC tag (e.g., ST25DV) and noticed that when I add an NDEF record using the ST25 mobile apps, the system automatically adds a 4-byte Capability Container (CC) to the NDEF message record.My question is:Is there a way to a...
Hello,I’m working with the ST25R3911 NFC reader IC in a battery-powered application where ultra-low power consumption is critical.Is it allowed to completely switch off VDD_IO while VDD is still supplied (e.g., when the device is in Wake-Up mode)?Wil...
Hi Sirs, I want to buy an NFC WLC evaluation kit similar to the one shown in the picture I posted. Where can I buy?
Hi,We have duplicated the design onto our own NFC tag, copying the same antenna design onto a flexi pcbWhat should be the tuning capacitor for this coil be for NFC ?If thats not available, what is the inductance value of the antenna so we can try and...